This mattress has been awesome from the first night. I love that I can adjust it based on my condition on a particular day! My husband and I can each have exactly the bed we want. I had been sleeping so badly on our (MUCH) more expensive Tempurpedic that if I woke up and my husband was snoring, I could not go back to sleep. I started moving to the guest room during the night, and finally just started sleeping there. I have not slept in that room once since our iSleep arrived!! I also feel like this will continue to be comfortable over time, again as opposed to the Tempur, which started to develop sag after ONE YEAR. This bed was an awesome decision for us. We are buying another one for the guest room, but for guests instead of me!